finished config files for c++ code

common/cpp/include/json_parser/json_parser.h

common/cpp/src/json_parser/json_parser.cpp

common/cpp/src/json_parser/rapid_json.cpp

common/cpp/src/json_parser/rapid_json.h

common/cpp/unittests/json_parser/test_json_parser.cpp

tests/CMakeLists.txt

tests/json_parser/CMakeLists.txt

tests/json_parser/parse_config_file/CMakeLists.txt

tests/json_parser/parse_config_file/config.json

tests/json_parser/parse_config_file/config_bad.json

tests/json_parser/parse_config_file/parse_config_file.cpp